数字式分频器输出的信号是由晶体振荡器输出的脉冲经计数器分频后获得的低频信号,因此其频率稳定度和精度很高,而改变计数器的计数数目,又可以改变输出的低频信号频率,是一种简单、方便的高精度、高稳定度频率源,且有一般LC或RC振荚源所没有的明显优点。本文介绍了数字式分频器的原理、设计方法及其应用。 The digital divider output signal is the low frequency signal obtained by the crystal oscillator output pulse divided by the counter, so its frequency stability and accuracy is high, and change the counter count number, but also can change the output of the low frequency signal Frequency, is a simple, convenient high-precision, high-stability frequency source, with the obvious advantages not found with typical LC or RC vibrating pod sources. This article introduced the principle of the digital frequency divider, design method and its application.